html,body{
  width: 100%;
  height: 100%;
}
body,div,ul,ol,dl,li,dt,dd,h1,h2,h3,h4,p,form,iframe,input,textarea,a,span,em,strong,img,html,nav,header,article,button,footer,var {
  padding:0;
  margin:0;
}
body { font:12px/1.2rem "Microsoft YaHei",tahoma,arial,sans-serif;min-width:320px;position:relative; }
form,input {background:none;border:none;}
ul,dl,ol {list-style-type:none;}
h1, h2, h3, h4, h5 { font:12px/1.2rem "Microsoft YaHei",arial,tahoma; }
a { text-decoration:none; }
a:hover,a:focus { outline:none; }
table { border-collapse:collapse;border-spacing:0; }
img { border:none; }
strong,b { font-weight:normal; }
em,i,var { font-style:normal; }
p { text-indent:0; }
.clear { clear:both;height:0;line-height:0;overflow:hidden;width:0; }
.clearfix:after { clear:both;content:".";display:block;font-size:0;height:0;visibility:hidden; }
/*// 尺寸转换
@function px2rem($px, $base-font-size: 75px) { !*设计稿宽度为750，因此此处为75*!
  @if (unitless($px)) {
    @return px2rem($px + 0px);
  } @else if (unit($px) == rem) {
    @return $px;
  }
  @return ($px / $base-font-size) * 1rem;
}
// 字体转换
@mixin font-dpr($font-size) {
  font-size: $font-size;
  [data-dpr="2"] & {
    font-size: $font-size * 2;
  }
  [data-dpr="3"] & {
    font-size: $font-size * 3;
  }
}*/
